Adler provides a sharp analysis and strong theoretical grounding for her work, pulling together research related to the relationship between language and mathematics, communicating mathematics, and mathematics in bi-/multilingual settings. In so doing, she offers a direct challenge to dominant research on communication in mathematics classrooms that has `othered' the multilingual setting in its normalisation of the monolingual classroom. The `norm' is a multicultural one. Set in contemporary South Africa - a context of linguistic diversity and rapid change - this book offers a spotlight whose beam is wide enough to illuminate dilemmas at work in all mathematics classrooms.